Year | Value | 2022 | 83.664 | 2021 | 83.323 | 2020 | 82.974 | 2019 | 82.616 | 2018 | 82.248 | 2017 | 81.871 | 2016 | 81.485 | 2015 | 81.091 | 2014 | 80.692 | 2013 | 80.286 | 2012 | 79.874 | 2011 | 79.455 | 2010 | 79.102 | 2009 | 78.815 | 2008 | 78.526 | 2007 | 78.234 | 2006 | 77.95 | 2005 | 77.675 | 2004 | 77.399 | 2003 | 77.084 | 2002 | 76.733 | 2001 | 76.378 | 2000 | 76.02 | 1999 | 75.569 | 1998 | 75.027 | 1997 | 74.476 | 1996 | 74.062 | 1995 | 73.787 | 1994 | 73.453 | 1993 | 73.061 | 1992 | 72.665 | 1991 | 72.265 | 1990 | 71.956 | 1989 | 71.828 | 1988 | 71.699 | 1987 | 71.57 | 1986 | 71.44 | 1985 | 71.31 | 1984 | 71.18 | 1983 | 71.049 | 1982 | 70.918 | 1981 | 70.787 | 1980 | 70.545 | 1979 | 70.081 | 1978 | 69.614 | 1977 | 69.142 | 1976 | 68.667 | 1975 | 68.187 | 1974 | 67.703 | 1973 | 67.216 | 1972 | 66.725 | 1971 | 66.23 | 1970 | 65.396 | 1969 | 63.881 | 1968 | 62.34 | 1967 | 60.77 | 1966 | 59.179 | 1965 | 57.568 | 1964 | 55.944 | 1963 | 54.302 | 1962 | 52.653 | 1961 | 50.998 | 1960 | 49.92 |
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